Light-proof case for sensitized plates.



ND. 7|4,860. A Patented [180.2, I902. A. A. BROOKS 8.1;. A. WATSON.

LIGHT PROOF CASE FOR SENSITIZED PLATES.

(Application filed Apr. 29. 1902.)

(No Model.)

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UNITED STATES PATENT OFFICE.

ARTHUR AUGUSTUS BROOKS AND GEORGE ANDREW WATSON, OF LIVERPOOL, ENGLAND.

LIGHT-PROOF CASE FOR SENSITIZED PLATES.

SPECIFICATION formingpart of Letters Patent No. 714,860, dated December 2, 1902.

Application filed April 29, 1902. Serial No. 105,181. (No model.)

To all whom it may concern.-

Be it known that we, ARTHUR AUGUSTUS BRooKs and GEORGE ANDREW WATSON, subjects of the King of Great Britain and Ireland, residing at 81 Tower Buildings, Water street, Liverpool, in the county of Lancaster, England, have invented a new and useful Light- Proof Case for Sensitized Plates, of which the following is a specification.

This invention relates to an improved light proof case holding a number of sensitized plates for the daylight charging of magazinecameras adapted to receive such a case. It is particularly applicable to magazine-cameras in which each plate is successively seized by one end and withdrawn from the case in the camera for exposure, the object of this invention being to produce a cheap and compact case adapted to facilitate the seizure of the plates. As such cases form also the wrappers in which the sensitized plates are sold, they are useless when each set of plates has been exposed, and cheap manufacture is therefore a consideration.

In the drawings annexed hereunto, Figure 1 represents the case in elevation. Fig. 2 is a cross-sectional elevation; Fig. 3, a plan looking down. Fig. 4 represents a cross-section at mm. Fig. 5 represents the lower part of the case with the cap removed, and Fig. 6 is a vertical cross-section also Without the cap. The case consists of a back a, formed with three shallow sides a a a the two opposite sides a 0, having inturned lips or flanges a and a front part I), also having three shallow sides I) b 17'' adapted so as to fit inside the back a and slide therein, excluding the light along the three sides. The part b is retained in position by means of the inturned lips or flanges a, forming a dovetail, and is flush with the edges of the part aalong the bottom or open side. A cap 0 is formed to close the open end of the case and preferably fits outside. In order to exclude the light, the cap is provided with a lining of felt c or other suitable material. By forming a pimple d upon the sides of the part a near to the bottom edge and a corresponding depression 01 in the cap at each end, so as to engage therewith, the cap is retained in place. In Figs. 5 and 6, e represents the sensitized plates, and the case is shown with the cap a removed and the front Z) slid out for a short distance, eX- posing the lower margin of the bottom plate. In order to facilitate the sliding of the part b in the part a, the top side a may be pierced or cut away, as at 0. so that the part b may be slid by end pressure, and the part a may also have projections, such as f, in order to facilitate the obtaining of a grip thereof.

What we claim as our invention, and desire to secure by Letters Patent, is

A light-proof rectangular case for holding sensitized plates, consisting of a back having shallow sides on three margins, the two opposite sides having inturned flanges; a similar-sized front also having three shallow sides on the corresponding margins adapted to fit under the flanges of and slide in the said back, and a separate light-proof cap adapted to fit the open end of the case substantially as set forth.

In witness whereof we hay e hereunto set our hands in presence of two witnesses.

ARTHUR AUGUSTUS BROOKS. GEORGE ANDREW WATSON.

Witnesses:

FREDERICK JOHN WARING, THOMAS J AMES TAIT. 

